CYLINDER HEAD GP 3167896 - Caterpillar

Table 1
Event Code
Description Conditions which Activate the Code System Response
E224 (3) High Jacket Water Inlet Pressure Shutdown The trip point for high pressure at the inlet for the jacket water has been exceeded and the delay time has expired. The shutdown output is activated. The code is logged. The engine is shut down. Note: Refer to Troubleshooting, "Engine Monitoring System" for information on trip points and delay times.Probable Causes
The circuit for the pressure switch at the inlet of the jacket water coolant pump is open.
The pressure at the inlet of the jacket water coolant pump is excessive.Recommended Repairs
Check the Circuit for the Pressure Switch at the Inlet of the Jacket Water Coolant Pump
The circuit for the pressure switch must remain closed in order to avoid an "E224 (3) High Jacket Water Inlet Pressure Shutdown" event. Check wiring for damage or corrosion. Refer to Troubleshooting, "Electrical Connectors - Inspect".If a problem with the wiring for the circuit is found, repair the wiring, as needed.Check the Inlet Pressure of the Jacket Water
The pressure switch at the inlet of the jacket water coolant pump is designed to open across the "B" and "C" terminals at a pressure of 462 41 kPa (67 6 psi). Use a gauge to check the pressure at the inlet of the jacket water coolant pump.If the pressure is less than 462 41 kPa (67 6 psi) but the E224 event code is occurring, replace the pressure switch at the inlet of the jacket water coolant pump.If a pressure of at least 462 41 kPa (67 6 psi) is measured at the inlet of the jacket water coolant pump, the high pressure may be caused by a restriction in the jacket water system. Inspect the system for restrictions. Make repairs, as needed.Note: If the outlet pressure of the coolant is greater than approximately 444 kPa (64 psi), a 109-08 diagnostic code may be generated. This code may be generated although there is no malfunction in the electrical circuit. If this code is generated, verify the actual outlet pressure of the coolant with a pressure gauge. If the actual pressure is greater than approximately 444 kPa (64 psi), reduce the pressure. This will prevent a false 109-08 diagnostic code from being activated.